11-dehydro Thromboxane B2 Monoclonal Assay Buffer Concentrate (10X) Reference: 419517-10 11-dehydro Thromboxane B2 Monoclonal Assay Buffer Concentrate (10X) has been formulated and tested to work with Cayman’s ELISA Kits. Detailed instructions for its use are contained in the respective Cayman ELISA Kit booklet.